-85.83% is the change from 607 to 86
Calculation steps:
[( 86 - 607 ) ÷ 607] x 100 = -85.83%
Formula
Percentage change = [(86 - 607) / 607] x 100
Subtract the new number by the original number
86 - 607 = -521
-521 ÷ 607 = -0.8583196046128501
-0.8583196046128501 x 100 = -85.83%