18.88% is the change from 715 to 850
Calculation steps:
[( 850 - 715 ) ÷ 715] x 100 = 18.88%
Formula
Percentage change = [(850 - 715) / 715] x 100
Subtract the new number by the original number
850 - 715 = 135
135 ÷ 715 = 0.1888111888111888
0.1888111888111888 x 100 = 18.88%