15.81% is the change from 816 to 945
Calculation steps:
[( 945 - 816 ) ÷ 816] x 100 = 15.81%
Formula
Percentage change = [(945 - 816) / 816] x 100
Subtract the new number by the original number
945 - 816 = 129
129 ÷ 816 = 0.15808823529411764
0.15808823529411764 x 100 = 15.81%