-42.2% is the change from 891 to 515
Calculation steps:
[( 515 - 891 ) ÷ 891] x 100 = -42.2%
Formula
Percentage change = [(515 - 891) / 891] x 100
Subtract the new number by the original number
515 - 891 = -376
-376 ÷ 891 = -0.4219977553310887
-0.4219977553310887 x 100 = -42.2%