-43.8% is the change from 927 to 521
Calculation steps:
[( 521 - 927 ) ÷ 927] x 100 = -43.8%
Formula
Percentage change = [(521 - 927) / 927] x 100
Subtract the new number by the original number
521 - 927 = -406
-406 ÷ 927 = -0.43797195253505933
-0.43797195253505933 x 100 = -43.8%