-27.38% is the change from 891 to 647
Calculation steps:
[( 647 - 891 ) ÷ 891] x 100 = -27.38%
Formula
Percentage change = [(647 - 891) / 891] x 100
Subtract the new number by the original number
647 - 891 = -244
-244 ÷ 891 = -0.2738496071829405
-0.2738496071829405 x 100 = -27.38%