-70.31% is the change from 859 to 255
Calculation steps:
[( 255 - 859 ) ÷ 859] x 100 = -70.31%
Formula
Percentage change = [(255 - 859) / 859] x 100
Subtract the new number by the original number
255 - 859 = -604
-604 ÷ 859 = -0.7031431897555297
-0.7031431897555297 x 100 = -70.31%