-69.81% is the change from 828 to 250
Calculation steps:
[( 250 - 828 ) ÷ 828] x 100 = -69.81%
Formula
Percentage change = [(250 - 828) / 828] x 100
Subtract the new number by the original number
250 - 828 = -578
-578 ÷ 828 = -0.6980676328502415
-0.6980676328502415 x 100 = -69.81%