-70.6% is the change from 830 to 244
Calculation steps:
[( 244 - 830 ) ÷ 830] x 100 = -70.6%
Formula
Percentage change = [(244 - 830) / 830] x 100
Subtract the new number by the original number
244 - 830 = -586
-586 ÷ 830 = -0.7060240963855422
-0.7060240963855422 x 100 = -70.6%