21.28% is the change from 672 to 815
Calculation steps:
[( 815 - 672 ) ÷ 672] x 100 = 21.28%
Formula
Percentage change = [(815 - 672) / 672] x 100
Subtract the new number by the original number
815 - 672 = 143
143 ÷ 672 = 0.21279761904761904
0.21279761904761904 x 100 = 21.28%