-85.03% is the change from 608 to 91
Calculation steps:
[( 91 - 608 ) ÷ 608] x 100 = -85.03%
Formula
Percentage change = [(91 - 608) / 608] x 100
Subtract the new number by the original number
91 - 608 = -517
-517 ÷ 608 = -0.850328947368421
-0.850328947368421 x 100 = -85.03%