-54.64% is the change from 507 to 230
Calculation steps:
[( 230 - 507 ) ÷ 507] x 100 = -54.64%
Formula
Percentage change = [(230 - 507) / 507] x 100
Subtract the new number by the original number
230 - 507 = -277
-277 ÷ 507 = -0.5463510848126233
-0.5463510848126233 x 100 = -54.64%