-65.97% is the change from 670 to 228
Calculation steps:
[( 228 - 670 ) ÷ 670] x 100 = -65.97%
Formula
Percentage change = [(228 - 670) / 670] x 100
Subtract the new number by the original number
228 - 670 = -442
-442 ÷ 670 = -0.6597014925373135
-0.6597014925373135 x 100 = -65.97%