-85.23% is the change from 616 to 91
Calculation steps:
[( 91 - 616 ) ÷ 616] x 100 = -85.23%
Formula
Percentage change = [(91 - 616) / 616] x 100
Subtract the new number by the original number
91 - 616 = -525
-525 ÷ 616 = -0.8522727272727273
-0.8522727272727273 x 100 = -85.23%