817.81% is the change from 73 to 670
Calculation steps:
[( 670 - 73 ) ÷ 73] x 100 = 817.81%
Formula
Percentage change = [(670 - 73) / 73] x 100
Subtract the new number by the original number
670 - 73 = 597
597 ÷ 73 = 8.178082191780822
8.178082191780822 x 100 = 817.81%