806.76% is the change from 74 to 671
Calculation steps:
[( 671 - 74 ) ÷ 74] x 100 = 806.76%
Formula
Percentage change = [(671 - 74) / 74] x 100
Subtract the new number by the original number
671 - 74 = 597
597 ÷ 74 = 8.067567567567568
8.067567567567568 x 100 = 806.76%