-47.83% is the change from 830 to 433
Calculation steps:
[( 433 - 830 ) ÷ 830] x 100 = -47.83%
Formula
Percentage change = [(433 - 830) / 830] x 100
Subtract the new number by the original number
433 - 830 = -397
-397 ÷ 830 = -0.4783132530120482
-0.4783132530120482 x 100 = -47.83%