-49.88% is the change from 830 to 416
Calculation steps:
[( 416 - 830 ) ÷ 830] x 100 = -49.88%
Formula
Percentage change = [(416 - 830) / 830] x 100
Subtract the new number by the original number
416 - 830 = -414
-414 ÷ 830 = -0.4987951807228916
-0.4987951807228916 x 100 = -49.88%