-41.49% is the change from 523 to 306
Calculation steps:
[( 306 - 523 ) ÷ 523] x 100 = -41.49%
Formula
Percentage change = [(306 - 523) / 523] x 100
Subtract the new number by the original number
306 - 523 = -217
-217 ÷ 523 = -0.4149139579349904
-0.4149139579349904 x 100 = -41.49%