-54.64% is the change from 485 to 220
Calculation steps:
[( 220 - 485 ) ÷ 485] x 100 = -54.64%
Formula
Percentage change = [(220 - 485) / 485] x 100
Subtract the new number by the original number
220 - 485 = -265
-265 ÷ 485 = -0.5463917525773195
-0.5463917525773195 x 100 = -54.64%