-86.38% is the change from 624 to 85
Calculation steps:
[( 85 - 624 ) ÷ 624] x 100 = -86.38%
Formula
Percentage change = [(85 - 624) / 624] x 100
Subtract the new number by the original number
85 - 624 = -539
-539 ÷ 624 = -0.8637820512820513
-0.8637820512820513 x 100 = -86.38%