-59.22% is the change from 510 to 208
Calculation steps:
[( 208 - 510 ) ÷ 510] x 100 = -59.22%
Formula
Percentage change = [(208 - 510) / 510] x 100
Subtract the new number by the original number
208 - 510 = -302
-302 ÷ 510 = -0.592156862745098
-0.592156862745098 x 100 = -59.22%