-40.05% is the change from 859 to 515
Calculation steps:
[( 515 - 859 ) ÷ 859] x 100 = -40.05%
Formula
Percentage change = [(515 - 859) / 859] x 100
Subtract the new number by the original number
515 - 859 = -344
-344 ÷ 859 = -0.40046565774155995
-0.40046565774155995 x 100 = -40.05%