-69.98% is the change from 836 to 251
Calculation steps:
[( 251 - 836 ) ÷ 836] x 100 = -69.98%
Formula
Percentage change = [(251 - 836) / 836] x 100
Subtract the new number by the original number
251 - 836 = -585
-585 ÷ 836 = -0.6997607655502392
-0.6997607655502392 x 100 = -69.98%