-64.34% is the change from 617 to 220
Calculation steps:
[( 220 - 617 ) ÷ 617] x 100 = -64.34%
Formula
Percentage change = [(220 - 617) / 617] x 100
Subtract the new number by the original number
220 - 617 = -397
-397 ÷ 617 = -0.6434359805510534
-0.6434359805510534 x 100 = -64.34%