-48.34% is the change from 542 to 280
Calculation steps:
[( 280 - 542 ) ÷ 542] x 100 = -48.34%
Formula
Percentage change = [(280 - 542) / 542] x 100
Subtract the new number by the original number
280 - 542 = -262
-262 ÷ 542 = -0.4833948339483395
-0.4833948339483395 x 100 = -48.34%