-65.15% is the change from 637 to 222
Calculation steps:
[( 222 - 637 ) ÷ 637] x 100 = -65.15%
Formula
Percentage change = [(222 - 637) / 637] x 100
Subtract the new number by the original number
222 - 637 = -415
-415 ÷ 637 = -0.6514913657770801
-0.6514913657770801 x 100 = -65.15%