-60.95% is the change from 507 to 198
Calculation steps:
[( 198 - 507 ) ÷ 507] x 100 = -60.95%
Formula
Percentage change = [(198 - 507) / 507] x 100
Subtract the new number by the original number
198 - 507 = -309
-309 ÷ 507 = -0.6094674556213018
-0.6094674556213018 x 100 = -60.95%