-70.76% is the change from 855 to 250
Calculation steps:
[( 250 - 855 ) ÷ 855] x 100 = -70.76%
Formula
Percentage change = [(250 - 855) / 855] x 100
Subtract the new number by the original number
250 - 855 = -605
-605 ÷ 855 = -0.7076023391812866
-0.7076023391812866 x 100 = -70.76%