36.88% is the change from 640 to 876
Calculation steps:
[( 876 - 640 ) ÷ 640] x 100 = 36.88%
Formula
Percentage change = [(876 - 640) / 640] x 100
Subtract the new number by the original number
876 - 640 = 236
236 ÷ 640 = 0.36875
0.36875 x 100 = 36.88%