786.3% is the change from 73 to 647
Calculation steps:
[( 647 - 73 ) ÷ 73] x 100 = 786.3%
Formula
Percentage change = [(647 - 73) / 73] x 100
Subtract the new number by the original number
647 - 73 = 574
574 ÷ 73 = 7.863013698630137
7.863013698630137 x 100 = 786.3%