-88.49% is the change from 391 to 45
Calculation steps:
[( 45 - 391 ) ÷ 391] x 100 = -88.49%
Formula
Percentage change = [(45 - 391) / 391] x 100
Subtract the new number by the original number
45 - 391 = -346
-346 ÷ 391 = -0.8849104859335039
-0.8849104859335039 x 100 = -88.49%