-67.43% is the change from 829 to 270
Calculation steps:
[( 270 - 829 ) ÷ 829] x 100 = -67.43%
Formula
Percentage change = [(270 - 829) / 829] x 100
Subtract the new number by the original number
270 - 829 = -559
-559 ÷ 829 = -0.6743063932448733
-0.6743063932448733 x 100 = -67.43%