-64.37% is the change from 901 to 321
Calculation steps:
[( 321 - 901 ) ÷ 901] x 100 = -64.37%
Formula
Percentage change = [(321 - 901) / 901] x 100
Subtract the new number by the original number
321 - 901 = -580
-580 ÷ 901 = -0.6437291897891232
-0.6437291897891232 x 100 = -64.37%