-82.19% is the change from 438 to 78
Calculation steps:
[( 78 - 438 ) ÷ 438] x 100 = -82.19%
Formula
Percentage change = [(78 - 438) / 438] x 100
Subtract the new number by the original number
78 - 438 = -360
-360 ÷ 438 = -0.821917808219178
-0.821917808219178 x 100 = -82.19%