-60% is the change from 540 to 216
Calculation steps:
[( 216 - 540 ) ÷ 540] x 100 = -60%
Formula
Percentage change = [(216 - 540) / 540] x 100
Subtract the new number by the original number
216 - 540 = -324
-324 ÷ 540 = -0.6
-0.6 x 100 = -60%
Example