-37.03% is the change from 991 to 624
Calculation steps:
[( 624 - 991 ) ÷ 991] x 100 = -37.03%
Formula
Percentage change = [(624 - 991) / 991] x 100
Subtract the new number by the original number
624 - 991 = -367
-367 ÷ 991 = -0.3703329969727548
-0.3703329969727548 x 100 = -37.03%