18.9% is the change from 815 to 969
Calculation steps:
[( 969 - 815 ) ÷ 815] x 100 = 18.9%
Formula
Percentage change = [(969 - 815) / 815] x 100
Subtract the new number by the original number
969 - 815 = 154
154 ÷ 815 = 0.18895705521472392
0.18895705521472392 x 100 = 18.9%