-87.54% is the change from 939 to 117
Calculation steps:
[( 117 - 939 ) ÷ 939] x 100 = -87.54%
Formula
Percentage change = [(117 - 939) / 939] x 100
Subtract the new number by the original number
117 - 939 = -822
-822 ÷ 939 = -0.8753993610223643
-0.8753993610223643 x 100 = -87.54%