-41.53% is the change from 891 to 521
Calculation steps:
[( 521 - 891 ) ÷ 891] x 100 = -41.53%
Formula
Percentage change = [(521 - 891) / 891] x 100
Subtract the new number by the original number
521 - 891 = -370
-370 ÷ 891 = -0.4152637485970819
-0.4152637485970819 x 100 = -41.53%