-11.41% is the change from 920 to 815
Calculation steps:
[( 815 - 920 ) ÷ 920] x 100 = -11.41%
Formula
Percentage change = [(815 - 920) / 920] x 100
Subtract the new number by the original number
815 - 920 = -105
-105 ÷ 920 = -0.11413043478260869
-0.11413043478260869 x 100 = -11.41%