-87.27% is the change from 605 to 77
Calculation steps:
[( 77 - 605 ) ÷ 605] x 100 = -87.27%
Formula
Percentage change = [(77 - 605) / 605] x 100
Subtract the new number by the original number
77 - 605 = -528
-528 ÷ 605 = -0.8727272727272727
-0.8727272727272727 x 100 = -87.27%