-3.88% is the change from 901 to 866
Calculation steps:
[( 866 - 901 ) ÷ 901] x 100 = -3.88%
Formula
Percentage change = [(866 - 901) / 901] x 100
Subtract the new number by the original number
866 - 901 = -35
-35 ÷ 901 = -0.038845726970033294
-0.038845726970033294 x 100 = -3.88%