-85.89% is the change from 319 to 45
Calculation steps:
[( 45 - 319 ) ÷ 319] x 100 = -85.89%
Formula
Percentage change = [(45 - 319) / 319] x 100
Subtract the new number by the original number
45 - 319 = -274
-274 ÷ 319 = -0.8589341692789969
-0.8589341692789969 x 100 = -85.89%