526.26% is the change from 99 to 620
Calculation steps:
[( 620 - 99 ) ÷ 99] x 100 = 526.26%
Formula
Percentage change = [(620 - 99) / 99] x 100
Subtract the new number by the original number
620 - 99 = 521
521 ÷ 99 = 5.262626262626263
5.262626262626263 x 100 = 526.26%