350.7% is the change from 142 to 640
Calculation steps:
[( 640 - 142 ) ÷ 142] x 100 = 350.7%
Formula
Percentage change = [(640 - 142) / 142] x 100
Subtract the new number by the original number
640 - 142 = 498
498 ÷ 142 = 3.507042253521127
3.507042253521127 x 100 = 350.7%