-96.34% is the change from 273 to 10
Calculation steps:
[( 10 - 273 ) ÷ 273] x 100 = -96.34%
Formula
Percentage change = [(10 - 273) / 273] x 100
Subtract the new number by the original number
10 - 273 = -263
-263 ÷ 273 = -0.9633699633699634
-0.9633699633699634 x 100 = -96.34%