-81.49% is the change from 924 to 171
Calculation steps:
[( 171 - 924 ) ÷ 924] x 100 = -81.49%
Formula
Percentage change = [(171 - 924) / 924] x 100
Subtract the new number by the original number
171 - 924 = -753
-753 ÷ 924 = -0.814935064935065
-0.814935064935065 x 100 = -81.49%