-87.23% is the change from 603 to 77
Calculation steps:
[( 77 - 603 ) ÷ 603] x 100 = -87.23%
Formula
Percentage change = [(77 - 603) / 603] x 100
Subtract the new number by the original number
77 - 603 = -526
-526 ÷ 603 = -0.8723051409618574
-0.8723051409618574 x 100 = -87.23%