-54.76% is the change from 630 to 285
Calculation steps:
[( 285 - 630 ) ÷ 630] x 100 = -54.76%
Formula
Percentage change = [(285 - 630) / 630] x 100
Subtract the new number by the original number
285 - 630 = -345
-345 ÷ 630 = -0.5476190476190477
-0.5476190476190477 x 100 = -54.76%