-87.55% is the change from 273 to 34
Calculation steps:
[( 34 - 273 ) ÷ 273] x 100 = -87.55%
Formula
Percentage change = [(34 - 273) / 273] x 100
Subtract the new number by the original number
34 - 273 = -239
-239 ÷ 273 = -0.8754578754578755
-0.8754578754578755 x 100 = -87.55%