-67.67% is the change from 634 to 205
Calculation steps:
[( 205 - 634 ) ÷ 634] x 100 = -67.67%
Formula
Percentage change = [(205 - 634) / 634] x 100
Subtract the new number by the original number
205 - 634 = -429
-429 ÷ 634 = -0.6766561514195584
-0.6766561514195584 x 100 = -67.67%