-61.02% is the change from 508 to 198
Calculation steps:
[( 198 - 508 ) ÷ 508] x 100 = -61.02%
Formula
Percentage change = [(198 - 508) / 508] x 100
Subtract the new number by the original number
198 - 508 = -310
-310 ÷ 508 = -0.610236220472441
-0.610236220472441 x 100 = -61.02%