-97.72% is the change from 439 to 10
Calculation steps:
[( 10 - 439 ) ÷ 439] x 100 = -97.72%
Formula
Percentage change = [(10 - 439) / 439] x 100
Subtract the new number by the original number
10 - 439 = -429
-429 ÷ 439 = -0.9772209567198178
-0.9772209567198178 x 100 = -97.72%