-8.1% is the change from 247 to 227
Calculation steps:
[( 227 - 247 ) ÷ 247] x 100 = -8.1%
Formula
Percentage change = [(227 - 247) / 247] x 100
Subtract the new number by the original number
227 - 247 = -20
-20 ÷ 247 = -0.08097165991902834
-0.08097165991902834 x 100 = -8.1%