-72.86% is the change from 921 to 250
Calculation steps:
[( 250 - 921 ) ÷ 921] x 100 = -72.86%
Formula
Percentage change = [(250 - 921) / 921] x 100
Subtract the new number by the original number
250 - 921 = -671
-671 ÷ 921 = -0.7285559174809989
-0.7285559174809989 x 100 = -72.86%