-57.89% is the change from 190 to 80
Calculation steps:
[( 80 - 190 ) ÷ 190] x 100 = -57.89%
Formula
Percentage change = [(80 - 190) / 190] x 100
Subtract the new number by the original number
80 - 190 = -110
-110 ÷ 190 = -0.5789473684210527
-0.5789473684210527 x 100 = -57.89%