-98.63% is the change from 877 to 12
Calculation steps:
[( 12 - 877 ) ÷ 877] x 100 = -98.63%
Formula
Percentage change = [(12 - 877) / 877] x 100
Subtract the new number by the original number
12 - 877 = -865
-865 ÷ 877 = -0.9863169897377423
-0.9863169897377423 x 100 = -98.63%