22.66% is the change from 640 to 785
Calculation steps:
[( 785 - 640 ) ÷ 640] x 100 = 22.66%
Formula
Percentage change = [(785 - 640) / 640] x 100
Subtract the new number by the original number
785 - 640 = 145
145 ÷ 640 = 0.2265625
0.2265625 x 100 = 22.66%