-63.29% is the change from 858 to 315
Calculation steps:
[( 315 - 858 ) ÷ 858] x 100 = -63.29%
Formula
Percentage change = [(315 - 858) / 858] x 100
Subtract the new number by the original number
315 - 858 = -543
-543 ÷ 858 = -0.6328671328671329
-0.6328671328671329 x 100 = -63.29%