-21.08% is the change from 351 to 277
Calculation steps:
[( 277 - 351 ) ÷ 351] x 100 = -21.08%
Formula
Percentage change = [(277 - 351) / 351] x 100
Subtract the new number by the original number
277 - 351 = -74
-74 ÷ 351 = -0.21082621082621084
-0.21082621082621084 x 100 = -21.08%