-97.44% is the change from 273 to 7
Calculation steps:
[( 7 - 273 ) ÷ 273] x 100 = -97.44%
Formula
Percentage change = [(7 - 273) / 273] x 100
Subtract the new number by the original number
7 - 273 = -266
-266 ÷ 273 = -0.9743589743589743
-0.9743589743589743 x 100 = -97.44%