-70.69% is the change from 829 to 243
Calculation steps:
[( 243 - 829 ) ÷ 829] x 100 = -70.69%
Formula
Percentage change = [(243 - 829) / 829] x 100
Subtract the new number by the original number
243 - 829 = -586
-586 ÷ 829 = -0.706875753920386
-0.706875753920386 x 100 = -70.69%