-77.88% is the change from 624 to 138
Calculation steps:
[( 138 - 624 ) ÷ 624] x 100 = -77.88%
Formula
Percentage change = [(138 - 624) / 624] x 100
Subtract the new number by the original number
138 - 624 = -486
-486 ÷ 624 = -0.7788461538461539
-0.7788461538461539 x 100 = -77.88%