-97.53% is the change from 608 to 15
Calculation steps:
[( 15 - 608 ) ÷ 608] x 100 = -97.53%
Formula
Percentage change = [(15 - 608) / 608] x 100
Subtract the new number by the original number
15 - 608 = -593
-593 ÷ 608 = -0.975328947368421
-0.975328947368421 x 100 = -97.53%