-74.3% is the change from 603 to 155
Calculation steps:
[( 155 - 603 ) ÷ 603] x 100 = -74.3%
Formula
Percentage change = [(155 - 603) / 603] x 100
Subtract the new number by the original number
155 - 603 = -448
-448 ÷ 603 = -0.7429519071310116
-0.7429519071310116 x 100 = -74.3%