-70.41% is the change from 747 to 221
Calculation steps:
[( 221 - 747 ) ÷ 747] x 100 = -70.41%
Formula
Percentage change = [(221 - 747) / 747] x 100
Subtract the new number by the original number
221 - 747 = -526
-526 ÷ 747 = -0.7041499330655957
-0.7041499330655957 x 100 = -70.41%