-84.33% is the change from 319 to 50
Calculation steps:
[( 50 - 319 ) ÷ 319] x 100 = -84.33%
Formula
Percentage change = [(50 - 319) / 319] x 100
Subtract the new number by the original number
50 - 319 = -269
-269 ÷ 319 = -0.8432601880877743
-0.8432601880877743 x 100 = -84.33%