-54.49% is the change from 624 to 284
Calculation steps:
[( 284 - 624 ) ÷ 624] x 100 = -54.49%
Formula
Percentage change = [(284 - 624) / 624] x 100
Subtract the new number by the original number
284 - 624 = -340
-340 ÷ 624 = -0.5448717948717948
-0.5448717948717948 x 100 = -54.49%