-87.31% is the change from 717 to 91
Calculation steps:
[( 91 - 717 ) ÷ 717] x 100 = -87.31%
Formula
Percentage change = [(91 - 717) / 717] x 100
Subtract the new number by the original number
91 - 717 = -626
-626 ÷ 717 = -0.8730822873082287
-0.8730822873082287 x 100 = -87.31%