-67.24% is the change from 644 to 211
Calculation steps:
[( 211 - 644 ) ÷ 644] x 100 = -67.24%
Formula
Percentage change = [(211 - 644) / 644] x 100
Subtract the new number by the original number
211 - 644 = -433
-433 ÷ 644 = -0.672360248447205
-0.672360248447205 x 100 = -67.24%