-70.22% is the change from 742 to 221
Calculation steps:
[( 221 - 742 ) ÷ 742] x 100 = -70.22%
Formula
Percentage change = [(221 - 742) / 742] x 100
Subtract the new number by the original number
221 - 742 = -521
-521 ÷ 742 = -0.7021563342318059
-0.7021563342318059 x 100 = -70.22%