-70.62% is the change from 977 to 287
Calculation steps:
[( 287 - 977 ) ÷ 977] x 100 = -70.62%
Formula
Percentage change = [(287 - 977) / 977] x 100
Subtract the new number by the original number
287 - 977 = -690
-690 ÷ 977 = -0.706243602865916
-0.706243602865916 x 100 = -70.62%