-90.1% is the change from 616 to 61
Calculation steps:
[( 61 - 616 ) ÷ 616] x 100 = -90.1%
Formula
Percentage change = [(61 - 616) / 616] x 100
Subtract the new number by the original number
61 - 616 = -555
-555 ÷ 616 = -0.900974025974026
-0.900974025974026 x 100 = -90.1%