-34.91% is the change from 613 to 399
Calculation steps:
[( 399 - 613 ) ÷ 613] x 100 = -34.91%
Formula
Percentage change = [(399 - 613) / 613] x 100
Subtract the new number by the original number
399 - 613 = -214
-214 ÷ 613 = -0.34910277324632955
-0.34910277324632955 x 100 = -34.91%