-51.76% is the change from 939 to 453
Calculation steps:
[( 453 - 939 ) ÷ 939] x 100 = -51.76%
Formula
Percentage change = [(453 - 939) / 939] x 100
Subtract the new number by the original number
453 - 939 = -486
-486 ÷ 939 = -0.5175718849840255
-0.5175718849840255 x 100 = -51.76%