14.29% is the change from 840 to 960
Calculation steps:
[( 960 - 840 ) ÷ 840] x 100 = 14.29%
Formula
Percentage change = [(960 - 840) / 840] x 100
Subtract the new number by the original number
960 - 840 = 120
120 ÷ 840 = 0.14285714285714285
0.14285714285714285 x 100 = 14.29%