-41.81% is the change from 830 to 483
Calculation steps:
[( 483 - 830 ) ÷ 830] x 100 = -41.81%
Formula
Percentage change = [(483 - 830) / 830] x 100
Subtract the new number by the original number
483 - 830 = -347
-347 ÷ 830 = -0.41807228915662653
-0.41807228915662653 x 100 = -41.81%