-29.78% is the change from 742 to 521
Calculation steps:
[( 521 - 742 ) ÷ 742] x 100 = -29.78%
Formula
Percentage change = [(521 - 742) / 742] x 100
Subtract the new number by the original number
521 - 742 = -221
-221 ÷ 742 = -0.29784366576819404
-0.29784366576819404 x 100 = -29.78%