593.41% is the change from 91 to 631
Calculation steps:
[( 631 - 91 ) ÷ 91] x 100 = 593.41%
Formula
Percentage change = [(631 - 91) / 91] x 100
Subtract the new number by the original number
631 - 91 = 540
540 ÷ 91 = 5.934065934065934
5.934065934065934 x 100 = 593.41%