-47.53% is the change from 507 to 266
Calculation steps:
[( 266 - 507 ) ÷ 507] x 100 = -47.53%
Formula
Percentage change = [(266 - 507) / 507] x 100
Subtract the new number by the original number
266 - 507 = -241
-241 ÷ 507 = -0.47534516765285995
-0.47534516765285995 x 100 = -47.53%