-5.6% is the change from 661 to 624
Calculation steps:
[( 624 - 661 ) ÷ 661] x 100 = -5.6%
Formula
Percentage change = [(624 - 661) / 661] x 100
Subtract the new number by the original number
624 - 661 = -37
-37 ÷ 661 = -0.05597579425113464
-0.05597579425113464 x 100 = -5.6%