-70.45% is the change from 748 to 221
Calculation steps:
[( 221 - 748 ) ÷ 748] x 100 = -70.45%
Formula
Percentage change = [(221 - 748) / 748] x 100
Subtract the new number by the original number
221 - 748 = -527
-527 ÷ 748 = -0.7045454545454546
-0.7045454545454546 x 100 = -70.45%