1485.71% is the change from 42 to 666
Calculation steps:
[( 666 - 42 ) ÷ 42] x 100 = 1485.71%
Formula
Percentage change = [(666 - 42) / 42] x 100
Subtract the new number by the original number
666 - 42 = 624
624 ÷ 42 = 14.857142857142858
14.857142857142858 x 100 = 1485.71%