22.56% is the change from 665 to 815
Calculation steps:
[( 815 - 665 ) ÷ 665] x 100 = 22.56%
Formula
Percentage change = [(815 - 665) / 665] x 100
Subtract the new number by the original number
815 - 665 = 150
150 ÷ 665 = 0.22556390977443608
0.22556390977443608 x 100 = 22.56%