321.02% is the change from 157 to 661
Calculation steps:
[( 661 - 157 ) ÷ 157] x 100 = 321.02%
Formula
Percentage change = [(661 - 157) / 157] x 100
Subtract the new number by the original number
661 - 157 = 504
504 ÷ 157 = 3.210191082802548
3.210191082802548 x 100 = 321.02%