-64.42% is the change from 877 to 312
Calculation steps:
[( 312 - 877 ) ÷ 877] x 100 = -64.42%
Formula
Percentage change = [(312 - 877) / 877] x 100
Subtract the new number by the original number
312 - 877 = -565
-565 ÷ 877 = -0.6442417331812998
-0.6442417331812998 x 100 = -64.42%