-56.12% is the change from 490 to 215
Calculation steps:
[( 215 - 490 ) ÷ 490] x 100 = -56.12%
Formula
Percentage change = [(215 - 490) / 490] x 100
Subtract the new number by the original number
215 - 490 = -275
-275 ÷ 490 = -0.5612244897959183
-0.5612244897959183 x 100 = -56.12%