-19.64% is the change from 275 to 221
Calculation steps:
[( 221 - 275 ) ÷ 275] x 100 = -19.64%
Formula
Percentage change = [(221 - 275) / 275] x 100
Subtract the new number by the original number
221 - 275 = -54
-54 ÷ 275 = -0.19636363636363635
-0.19636363636363635 x 100 = -19.64%