12.74% is the change from 840 to 947
Calculation steps:
[( 947 - 840 ) ÷ 840] x 100 = 12.74%
Formula
Percentage change = [(947 - 840) / 840] x 100
Subtract the new number by the original number
947 - 840 = 107
107 ÷ 840 = 0.12738095238095237
0.12738095238095237 x 100 = 12.74%