-70.05% is the change from 738 to 221
Calculation steps:
[( 221 - 738 ) ÷ 738] x 100 = -70.05%
Formula
Percentage change = [(221 - 738) / 738] x 100
Subtract the new number by the original number
221 - 738 = -517
-517 ÷ 738 = -0.7005420054200542
-0.7005420054200542 x 100 = -70.05%