678.57% is the change from 84 to 654
Calculation steps:
[( 654 - 84 ) ÷ 84] x 100 = 678.57%
Formula
Percentage change = [(654 - 84) / 84] x 100
Subtract the new number by the original number
654 - 84 = 570
570 ÷ 84 = 6.785714285714286
6.785714285714286 x 100 = 678.57%