-60.08% is the change from 977 to 390
Calculation steps:
[( 390 - 977 ) ÷ 977] x 100 = -60.08%
Formula
Percentage change = [(390 - 977) / 977] x 100
Subtract the new number by the original number
390 - 977 = -587
-587 ÷ 977 = -0.6008188331627431
-0.6008188331627431 x 100 = -60.08%