-54.34% is the change from 830 to 379
Calculation steps:
[( 379 - 830 ) ÷ 830] x 100 = -54.34%
Formula
Percentage change = [(379 - 830) / 830] x 100
Subtract the new number by the original number
379 - 830 = -451
-451 ÷ 830 = -0.5433734939759036
-0.5433734939759036 x 100 = -54.34%