how to change output PWM based on analog input

I want to give different PWM (D11) signals based on how much voltage is input (A7). How can I change PWM for different analog values?

#include <LiquidCrystal.h>          
#include <ezButton.h>        

ezButton button(7);        
int count;       
int count1;          

const float Pin0=A0;       
const float Pin1=A1;      
const float Pin2=A2;       
const float Pin7=A7;            

float valueA;    
float valueB;       
float valueC;      
int valueD;       

const float rs = 1, en = 2, d4 = 3, d5 = 4, d6 = 5, d7 = 6;      

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);          

void setup() {       
  TCCR2B = 0b00000001; // x1      
  TCCR2A = 0b00000011; // fast pwm       
  pinMode(11, OUTPUT);       
  pinMode(9, OUTPUT);        
  button.setDebounceTime(5); // set debounce time to 50 milliseconds       
  button.setCountMode(COUNT_FALLING);         
  lcd.begin(16, 1);          
  pinMode(Pin0, INPUT);           
  pinMode(Pin1, INPUT);              
  pinMode(Pin2, INPUT);          
  pinMode(Pin7, INPUT);             
}           

void loop() {                        
  float a;            
  float b;               
  float c;               

  valueD = analogRead(Pin7);                

  digitalWrite(9, HIGH);             
  digitalWrite(9, LOW);                    
  valueA = analogRead(Pin0);                  
  digitalWrite(9, HIGH);                  

  a = valueA * 5 / 1023;                
  b = valueB * 5 / 1023 * 1.91 - a;                
  c = valueC * 5 / 1023 * 0.182;                 

  valueB = analogRead(Pin1);                  
  valueC = analogRead(Pin2);                    

  button.loop();                   
  int count = button.getCount();                  
  count1 = constrain(count, 0, 4);                   
  if (count1 == 0) {                  
    lcd.print("Bal-Chg");                 
  }                   
  if (count1 == 1) {                     
    lcd.print("V1: ");                     
    lcd.print(a);                    
    lcd.print("V");                    
  }                 
  if (count1 == 2) {                
    lcd.print("V2: ");                 
    lcd.print(b);                     
    lcd.print("V");                 
  }                
  if (count1 == 3) {                  
    lcd.print("I:");               
    lcd.print(c);                
    lcd.print("A");              
  }               
  if (count1 == 4) {                 
    button.resetCount();                  
  }             

  delay(500);               
  lcd.clear();                
}