-82.95% is the change from 915 to 156
Calculation steps:
[( 156 - 915 ) ÷ 915] x 100 = -82.95%
Formula
Percentage change = [(156 - 915) / 915] x 100
Subtract the new number by the original number
156 - 915 = -759
-759 ÷ 915 = -0.8295081967213115
-0.8295081967213115 x 100 = -82.95%
Example