22.34% is the change from 640 to 783
Calculation steps:
[( 783 - 640 ) ÷ 640] x 100 = 22.34%
Formula
Percentage change = [(783 - 640) / 640] x 100
Subtract the new number by the original number
783 - 640 = 143
143 ÷ 640 = 0.2234375
0.2234375 x 100 = 22.34%