-14.62% is the change from 971 to 829
Calculation steps:
[( 829 - 971 ) ÷ 971] x 100 = -14.62%
Formula
Percentage change = [(829 - 971) / 971] x 100
Subtract the new number by the original number
829 - 971 = -142
-142 ÷ 971 = -0.1462409886714727
-0.1462409886714727 x 100 = -14.62%