-87.42% is the change from 787 to 99
Calculation steps:
[( 99 - 787 ) ÷ 787] x 100 = -87.42%
Formula
Percentage change = [(99 - 787) / 787] x 100
Subtract the new number by the original number
99 - 787 = -688
-688 ÷ 787 = -0.8742058449809402
-0.8742058449809402 x 100 = -87.42%