-60.18% is the change from 555 to 221
Calculation steps:
[( 221 - 555 ) ÷ 555] x 100 = -60.18%
Formula
Percentage change = [(221 - 555) / 555] x 100
Subtract the new number by the original number
221 - 555 = -334
-334 ÷ 555 = -0.6018018018018018
-0.6018018018018018 x 100 = -60.18%