767.57% is the change from 74 to 642
Calculation steps:
[( 642 - 74 ) ÷ 74] x 100 = 767.57%
Formula
Percentage change = [(642 - 74) / 74] x 100
Subtract the new number by the original number
642 - 74 = 568
568 ÷ 74 = 7.675675675675675
7.675675675675675 x 100 = 767.57%