310.9% is the change from 156 to 641
Calculation steps:
[( 641 - 156 ) ÷ 156] x 100 = 310.9%
Formula
Percentage change = [(641 - 156) / 156] x 100
Subtract the new number by the original number
641 - 156 = 485
485 ÷ 156 = 3.108974358974359
3.108974358974359 x 100 = 310.9%