-62.35% is the change from 510 to 192
Calculation steps:
[( 192 - 510 ) ÷ 510] x 100 = -62.35%
Formula
Percentage change = [(192 - 510) / 510] x 100
Subtract the new number by the original number
192 - 510 = -318
-318 ÷ 510 = -0.6235294117647059
-0.6235294117647059 x 100 = -62.35%