-83.42% is the change from 591 to 98
Calculation steps:
[( 98 - 591 ) ÷ 591] x 100 = -83.42%
Formula
Percentage change = [(98 - 591) / 591] x 100
Subtract the new number by the original number
98 - 591 = -493
-493 ÷ 591 = -0.8341793570219966
-0.8341793570219966 x 100 = -83.42%