-75.12% is the change from 623 to 155
Calculation steps:
[( 155 - 623 ) ÷ 623] x 100 = -75.12%
Formula
Percentage change = [(155 - 623) / 623] x 100
Subtract the new number by the original number
155 - 623 = -468
-468 ÷ 623 = -0.7512038523274478
-0.7512038523274478 x 100 = -75.12%