15.1% is the change from 861 to 991
Calculation steps:
[( 991 - 861 ) ÷ 861] x 100 = 15.1%
Formula
Percentage change = [(991 - 861) / 861] x 100
Subtract the new number by the original number
991 - 861 = 130
130 ÷ 861 = 0.15098722415795587
0.15098722415795587 x 100 = 15.1%