-64.25% is the change from 607 to 217
Calculation steps:
[( 217 - 607 ) ÷ 607] x 100 = -64.25%
Formula
Percentage change = [(217 - 607) / 607] x 100
Subtract the new number by the original number
217 - 607 = -390
-390 ÷ 607 = -0.642504118616145
-0.642504118616145 x 100 = -64.25%