-57.79% is the change from 507 to 214
Calculation steps:
[( 214 - 507 ) ÷ 507] x 100 = -57.79%
Formula
Percentage change = [(214 - 507) / 507] x 100
Subtract the new number by the original number
214 - 507 = -293
-293 ÷ 507 = -0.5779092702169625
-0.5779092702169625 x 100 = -57.79%