-49.44% is the change from 540 to 273
Calculation steps:
[( 273 - 540 ) ÷ 540] x 100 = -49.44%
Formula
Percentage change = [(273 - 540) / 540] x 100
Subtract the new number by the original number
273 - 540 = -267
-267 ÷ 540 = -0.49444444444444446
-0.49444444444444446 x 100 = -49.44%