-64.69% is the change from 977 to 345
Calculation steps:
[( 345 - 977 ) ÷ 977] x 100 = -64.69%
Formula
Percentage change = [(345 - 977) / 977] x 100
Subtract the new number by the original number
345 - 977 = -632
-632 ÷ 977 = -0.646878198567042
-0.646878198567042 x 100 = -64.69%