-76.92% is the change from 273 to 63
Calculation steps:
[( 63 - 273 ) ÷ 273] x 100 = -76.92%
Formula
Percentage change = [(63 - 273) / 273] x 100
Subtract the new number by the original number
63 - 273 = -210
-210 ÷ 273 = -0.7692307692307693
-0.7692307692307693 x 100 = -76.92%