1200% is the change from 42 to 546
Calculation steps:
[( 546 - 42 ) ÷ 42] x 100 = 1200%
Formula
Percentage change = [(546 - 42) / 42] x 100
Subtract the new number by the original number
546 - 42 = 504
504 ÷ 42 = 12
12 x 100 = 1200%
Example