int sensorPin =A2;

void setup() {
  Serial.begin(9600);
  delay(100);
}
void loop() {
  int sensorValue;
  sensorValue=analogRead(sensorPin);
  sensorValue=map(sensorValue,300,1023,100,0);
  Serial.print("Soil moisture: ");
  Serial.print (sensorValue);
  Serial.println("%");
  delay(100);
}
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