-64.1% is the change from 830 to 298
Calculation steps:
[( 298 - 830 ) ÷ 830] x 100 = -64.1%
Formula
Percentage change = [(298 - 830) / 830] x 100
Subtract the new number by the original number
298 - 830 = -532
-532 ÷ 830 = -0.6409638554216868
-0.6409638554216868 x 100 = -64.1%