-31.86% is the change from 976 to 665
Calculation steps:
[( 665 - 976 ) ÷ 976] x 100 = -31.86%
Formula
Percentage change = [(665 - 976) / 976] x 100
Subtract the new number by the original number
665 - 976 = -311
-311 ÷ 976 = -0.31864754098360654
-0.31864754098360654 x 100 = -31.86%