-71.83% is the change from 891 to 251
Calculation steps:
[( 251 - 891 ) ÷ 891] x 100 = -71.83%
Formula
Percentage change = [(251 - 891) / 891] x 100
Subtract the new number by the original number
251 - 891 = -640
-640 ÷ 891 = -0.7182940516273849
-0.7182940516273849 x 100 = -71.83%