19.72% is the change from 71 to 85
Calculation steps:
[( 85 - 71 ) ÷ 71] x 100 = 19.72%
Formula
Percentage change = [(85 - 71) / 71] x 100
Subtract the new number by the original number
85 - 71 = 14
14 ÷ 71 = 0.19718309859154928
0.19718309859154928 x 100 = 19.72%