-40.63% is the change from 859 to 510
Calculation steps:
[( 510 - 859 ) ÷ 859] x 100 = -40.63%
Formula
Percentage change = [(510 - 859) / 859] x 100
Subtract the new number by the original number
510 - 859 = -349
-349 ÷ 859 = -0.4062863795110594
-0.4062863795110594 x 100 = -40.63%