-67.31% is the change from 829 to 271
Calculation steps:
[( 271 - 829 ) ÷ 829] x 100 = -67.31%
Formula
Percentage change = [(271 - 829) / 829] x 100
Subtract the new number by the original number
271 - 829 = -558
-558 ÷ 829 = -0.6731001206272618
-0.6731001206272618 x 100 = -67.31%