-52.07% is the change from 507 to 243
Calculation steps:
[( 243 - 507 ) ÷ 507] x 100 = -52.07%
Formula
Percentage change = [(243 - 507) / 507] x 100
Subtract the new number by the original number
243 - 507 = -264
-264 ÷ 507 = -0.5207100591715976
-0.5207100591715976 x 100 = -52.07%