-5.75% is the change from 661 to 623
Calculation steps:
[( 623 - 661 ) ÷ 661] x 100 = -5.75%
Formula
Percentage change = [(623 - 661) / 661] x 100
Subtract the new number by the original number
623 - 661 = -38
-38 ÷ 661 = -0.057488653555219364
-0.057488653555219364 x 100 = -5.75%