-89.95% is the change from 607 to 61
Calculation steps:
[( 61 - 607 ) ÷ 607] x 100 = -89.95%
Formula
Percentage change = [(61 - 607) / 607] x 100
Subtract the new number by the original number
61 - 607 = -546
-546 ÷ 607 = -0.899505766062603
-0.899505766062603 x 100 = -89.95%