643.96% is the change from 91 to 677
Calculation steps:
[( 677 - 91 ) ÷ 91] x 100 = 643.96%
Formula
Percentage change = [(677 - 91) / 91] x 100
Subtract the new number by the original number
677 - 91 = 586
586 ÷ 91 = 6.43956043956044
6.43956043956044 x 100 = 643.96%