311.46% is the change from 157 to 646
Calculation steps:
[( 646 - 157 ) ÷ 157] x 100 = 311.46%
Formula
Percentage change = [(646 - 157) / 157] x 100
Subtract the new number by the original number
646 - 157 = 489
489 ÷ 157 = 3.1146496815286624
3.1146496815286624 x 100 = 311.46%