40% is the change from 680 to 952
Calculation steps:
[( 952 - 680 ) ÷ 680] x 100 = 40%
Formula
Percentage change = [(952 - 680) / 680] x 100
Subtract the new number by the original number
952 - 680 = 272
272 ÷ 680 = 0.4
0.4 x 100 = 40%
Example