-51.14% is the change from 440 to 215
Calculation steps:
[( 215 - 440 ) ÷ 440] x 100 = -51.14%
Formula
Percentage change = [(215 - 440) / 440] x 100
Subtract the new number by the original number
215 - 440 = -225
-225 ÷ 440 = -0.5113636363636364
-0.5113636363636364 x 100 = -51.14%