647.71% is the change from 109 to 815
Calculation steps:
[( 815 - 109 ) ÷ 109] x 100 = 647.71%
Formula
Percentage change = [(815 - 109) / 109] x 100
Subtract the new number by the original number
815 - 109 = 706
706 ÷ 109 = 6.477064220183486
6.477064220183486 x 100 = 647.71%