-37.4% is the change from 623 to 390
Calculation steps:
[( 390 - 623 ) ÷ 623] x 100 = -37.4%
Formula
Percentage change = [(390 - 623) / 623] x 100
Subtract the new number by the original number
390 - 623 = -233
-233 ÷ 623 = -0.3739967897271268
-0.3739967897271268 x 100 = -37.4%