-22.51% is the change from 542 to 420
Calculation steps:
[( 420 - 542 ) ÷ 542] x 100 = -22.51%
Formula
Percentage change = [(420 - 542) / 542] x 100
Subtract the new number by the original number
420 - 542 = -122
-122 ÷ 542 = -0.22509225092250923
-0.22509225092250923 x 100 = -22.51%