-60.49% is the change from 858 to 339
Calculation steps:
[( 339 - 858 ) ÷ 858] x 100 = -60.49%
Formula
Percentage change = [(339 - 858) / 858] x 100
Subtract the new number by the original number
339 - 858 = -519
-519 ÷ 858 = -0.6048951048951049
-0.6048951048951049 x 100 = -60.49%