-78.64% is the change from 220 to 47
Calculation steps:
[( 47 - 220 ) ÷ 220] x 100 = -78.64%
Formula
Percentage change = [(47 - 220) / 220] x 100
Subtract the new number by the original number
47 - 220 = -173
-173 ÷ 220 = -0.7863636363636364
-0.7863636363636364 x 100 = -78.64%