-64.22% is the change from 858 to 307
Calculation steps:
[( 307 - 858 ) ÷ 858] x 100 = -64.22%
Formula
Percentage change = [(307 - 858) / 858] x 100
Subtract the new number by the original number
307 - 858 = -551
-551 ÷ 858 = -0.6421911421911422
-0.6421911421911422 x 100 = -64.22%