-54.19% is the change from 620 to 284
Calculation steps:
[( 284 - 620 ) ÷ 620] x 100 = -54.19%
Formula
Percentage change = [(284 - 620) / 620] x 100
Subtract the new number by the original number
284 - 620 = -336
-336 ÷ 620 = -0.5419354838709678
-0.5419354838709678 x 100 = -54.19%