558.16% is the change from 98 to 645
Calculation steps:
[( 645 - 98 ) ÷ 98] x 100 = 558.16%
Formula
Percentage change = [(645 - 98) / 98] x 100
Subtract the new number by the original number
645 - 98 = 547
547 ÷ 98 = 5.581632653061225
5.581632653061225 x 100 = 558.16%