-86.96% is the change from 698 to 91
Calculation steps:
[( 91 - 698 ) ÷ 698] x 100 = -86.96%
Formula
Percentage change = [(91 - 698) / 698] x 100
Subtract the new number by the original number
91 - 698 = -607
-607 ÷ 698 = -0.8696275071633238
-0.8696275071633238 x 100 = -86.96%