-19.78% is the change from 273 to 219
Calculation steps:
[( 219 - 273 ) ÷ 273] x 100 = -19.78%
Formula
Percentage change = [(219 - 273) / 273] x 100
Subtract the new number by the original number
219 - 273 = -54
-54 ÷ 273 = -0.1978021978021978
-0.1978021978021978 x 100 = -19.78%