-19.05% is the change from 273 to 221
Calculation steps:
[( 221 - 273 ) ÷ 273] x 100 = -19.05%
Formula
Percentage change = [(221 - 273) / 273] x 100
Subtract the new number by the original number
221 - 273 = -52
-52 ÷ 273 = -0.19047619047619047
-0.19047619047619047 x 100 = -19.05%