-88.4% is the change from 431 to 50
Calculation steps:
[( 50 - 431 ) ÷ 431] x 100 = -88.4%
Formula
Percentage change = [(50 - 431) / 431] x 100
Subtract the new number by the original number
50 - 431 = -381
-381 ÷ 431 = -0.8839907192575406
-0.8839907192575406 x 100 = -88.4%