-69.58% is the change from 858 to 261
Calculation steps:
[( 261 - 858 ) ÷ 858] x 100 = -69.58%
Formula
Percentage change = [(261 - 858) / 858] x 100
Subtract the new number by the original number
261 - 858 = -597
-597 ÷ 858 = -0.6958041958041958
-0.6958041958041958 x 100 = -69.58%