-49.63% is the change from 542 to 273
Calculation steps:
[( 273 - 542 ) ÷ 542] x 100 = -49.63%
Formula
Percentage change = [(273 - 542) / 542] x 100
Subtract the new number by the original number
273 - 542 = -269
-269 ÷ 542 = -0.496309963099631
-0.496309963099631 x 100 = -49.63%