-58.19% is the change from 830 to 347
Calculation steps:
[( 347 - 830 ) ÷ 830] x 100 = -58.19%
Formula
Percentage change = [(347 - 830) / 830] x 100
Subtract the new number by the original number
347 - 830 = -483
-483 ÷ 830 = -0.5819277108433735
-0.5819277108433735 x 100 = -58.19%