-47.41% is the change from 521 to 274
Calculation steps:
[( 274 - 521 ) ÷ 521] x 100 = -47.41%
Formula
Percentage change = [(274 - 521) / 521] x 100
Subtract the new number by the original number
274 - 521 = -247
-247 ÷ 521 = -0.4740882917466411
-0.4740882917466411 x 100 = -47.41%