657.14% is the change from 84 to 636
Calculation steps:
[( 636 - 84 ) ÷ 84] x 100 = 657.14%
Formula
Percentage change = [(636 - 84) / 84] x 100
Subtract the new number by the original number
636 - 84 = 552
552 ÷ 84 = 6.571428571428571
6.571428571428571 x 100 = 657.14%