-66.22% is the change from 977 to 330
Calculation steps:
[( 330 - 977 ) ÷ 977] x 100 = -66.22%
Formula
Percentage change = [(330 - 977) / 977] x 100
Subtract the new number by the original number
330 - 977 = -647
-647 ÷ 977 = -0.6622313203684749
-0.6622313203684749 x 100 = -66.22%