-85.17% is the change from 917 to 136
Calculation steps:
[( 136 - 917 ) ÷ 917] x 100 = -85.17%
Formula
Percentage change = [(136 - 917) / 917] x 100
Subtract the new number by the original number
136 - 917 = -781
-781 ÷ 917 = -0.8516902944383861
-0.8516902944383861 x 100 = -85.17%