-57.09% is the change from 748 to 321
Calculation steps:
[( 321 - 748 ) ÷ 748] x 100 = -57.09%
Formula
Percentage change = [(321 - 748) / 748] x 100
Subtract the new number by the original number
321 - 748 = -427
-427 ÷ 748 = -0.570855614973262
-0.570855614973262 x 100 = -57.09%