-35.01% is the change from 977 to 635
Calculation steps:
[( 635 - 977 ) ÷ 977] x 100 = -35.01%
Formula
Percentage change = [(635 - 977) / 977] x 100
Subtract the new number by the original number
635 - 977 = -342
-342 ÷ 977 = -0.3500511770726714
-0.3500511770726714 x 100 = -35.01%