-63.37% is the change from 273 to 100
Calculation steps:
[( 100 - 273 ) ÷ 273] x 100 = -63.37%
Formula
Percentage change = [(100 - 273) / 273] x 100
Subtract the new number by the original number
100 - 273 = -173
-173 ÷ 273 = -0.6336996336996337
-0.6336996336996337 x 100 = -63.37%