-47.2% is the change from 930 to 491
Calculation steps:
[( 491 - 930 ) ÷ 930] x 100 = -47.2%
Formula
Percentage change = [(491 - 930) / 930] x 100
Subtract the new number by the original number
491 - 930 = -439
-439 ÷ 930 = -0.4720430107526882
-0.4720430107526882 x 100 = -47.2%