116.22% is the change from 296 to 640
Calculation steps:
[( 640 - 296 ) ÷ 296] x 100 = 116.22%
Formula
Percentage change = [(640 - 296) / 296] x 100
Subtract the new number by the original number
640 - 296 = 344
344 ÷ 296 = 1.162162162162162
1.162162162162162 x 100 = 116.22%