-67.46% is the change from 670 to 218
Calculation steps:
[( 218 - 670 ) ÷ 670] x 100 = -67.46%
Formula
Percentage change = [(218 - 670) / 670] x 100
Subtract the new number by the original number
218 - 670 = -452
-452 ÷ 670 = -0.6746268656716418
-0.6746268656716418 x 100 = -67.46%