-87.95% is the change from 971 to 117
Calculation steps:
[( 117 - 971 ) ÷ 971] x 100 = -87.95%
Formula
Percentage change = [(117 - 971) / 971] x 100
Subtract the new number by the original number
117 - 971 = -854
-854 ÷ 971 = -0.8795056642636457
-0.8795056642636457 x 100 = -87.95%