-85.53% is the change from 629 to 91
Calculation steps:
[( 91 - 629 ) ÷ 629] x 100 = -85.53%
Formula
Percentage change = [(91 - 629) / 629] x 100
Subtract the new number by the original number
91 - 629 = -538
-538 ÷ 629 = -0.8553259141494436
-0.8553259141494436 x 100 = -85.53%