-59.76% is the change from 830 to 334
Calculation steps:
[( 334 - 830 ) ÷ 830] x 100 = -59.76%
Formula
Percentage change = [(334 - 830) / 830] x 100
Subtract the new number by the original number
334 - 830 = -496
-496 ÷ 830 = -0.5975903614457831
-0.5975903614457831 x 100 = -59.76%