1528.57% is the change from 42 to 684
Calculation steps:
[( 684 - 42 ) ÷ 42] x 100 = 1528.57%
Formula
Percentage change = [(684 - 42) / 42] x 100
Subtract the new number by the original number
684 - 42 = 642
642 ÷ 42 = 15.285714285714286
15.285714285714286 x 100 = 1528.57%