-30.28% is the change from 634 to 442
Calculation steps:
[( 442 - 634 ) ÷ 634] x 100 = -30.28%
Formula
Percentage change = [(442 - 634) / 634] x 100
Subtract the new number by the original number
442 - 634 = -192
-192 ÷ 634 = -0.3028391167192429
-0.3028391167192429 x 100 = -30.28%