-78.01% is the change from 623 to 137
Calculation steps:
[( 137 - 623 ) ÷ 623] x 100 = -78.01%
Formula
Percentage change = [(137 - 623) / 623] x 100
Subtract the new number by the original number
137 - 623 = -486
-486 ÷ 623 = -0.7800963081861958
-0.7800963081861958 x 100 = -78.01%