-20.3% is the change from 271 to 216
Calculation steps:
[( 216 - 271 ) ÷ 271] x 100 = -20.3%
Formula
Percentage change = [(216 - 271) / 271] x 100
Subtract the new number by the original number
216 - 271 = -55
-55 ÷ 271 = -0.2029520295202952
-0.2029520295202952 x 100 = -20.3%