321.15% is the change from 156 to 657
Calculation steps:
[( 657 - 156 ) ÷ 156] x 100 = 321.15%
Formula
Percentage change = [(657 - 156) / 156] x 100
Subtract the new number by the original number
657 - 156 = 501
501 ÷ 156 = 3.2115384615384617
3.2115384615384617 x 100 = 321.15%