-56.47% is the change from 510 to 222
Calculation steps:
[( 222 - 510 ) ÷ 510] x 100 = -56.47%
Formula
Percentage change = [(222 - 510) / 510] x 100
Subtract the new number by the original number
222 - 510 = -288
-288 ÷ 510 = -0.5647058823529412
-0.5647058823529412 x 100 = -56.47%