-91.21% is the change from 273 to 24
Calculation steps:
[( 24 - 273 ) ÷ 273] x 100 = -91.21%
Formula
Percentage change = [(24 - 273) / 273] x 100
Subtract the new number by the original number
24 - 273 = -249
-249 ÷ 273 = -0.9120879120879121
-0.9120879120879121 x 100 = -91.21%