-56.87% is the change from 830 to 358
Calculation steps:
[( 358 - 830 ) ÷ 830] x 100 = -56.87%
Formula
Percentage change = [(358 - 830) / 830] x 100
Subtract the new number by the original number
358 - 830 = -472
-472 ÷ 830 = -0.5686746987951807
-0.5686746987951807 x 100 = -56.87%