102.23% is the change from 403 to 815
Calculation steps:
[( 815 - 403 ) ÷ 403] x 100 = 102.23%
Formula
Percentage change = [(815 - 403) / 403] x 100
Subtract the new number by the original number
815 - 403 = 412
412 ÷ 403 = 1.022332506203474
1.022332506203474 x 100 = 102.23%