698.81% is the change from 84 to 671
Calculation steps:
[( 671 - 84 ) ÷ 84] x 100 = 698.81%
Formula
Percentage change = [(671 - 84) / 84] x 100
Subtract the new number by the original number
671 - 84 = 587
587 ÷ 84 = 6.988095238095238
6.988095238095238 x 100 = 698.81%